package com.cdl;

/**
 * @author cdl
 * @date 2025/9/30
 */
public class Welcome {
    enum Size {SMALL,MEDIUM,LARGE,EXTRA_LARGE};

    public static void main(String[] args) {
        String greeting = "Welcome to Core Java!";

        final double CM_PER_INCH = 2.54;
        double paperWidth = 8.5;
        double paperHeight =11;

        double y = Math.sqrt(11);

        Size size =Size.MEDIUM;

        StringBuilder builder =new StringBuilder();

        builder.append("aaa");
        builder.append("ddfdf1");


        System.out.println("Paper size in centimeters:" + paperWidth * CM_PER_INCH + "by" + paperHeight * CM_PER_INCH);
        System.out.println(builder);

        //System.out.println(greeting);
        //for (int i = 0; i < greeting.length(); i++) {
        //    System.out.println("=");
        //
        //
        //}
        //System.out.println();

    }
}
